// pages/basket/basket.js
var http = require("../../utils/http.js");
// var config = require("../../utils/config.js");
const Big = require("../../utils/big.min.js");

Page({

    /**
     * 页面的初始数据
     */
    data: {
        // picDomain: config.picDomain,
        shopCartItemDiscounts: [],
        finalMoney: 0,
        totalMoney: 0,
        subtractMoney: 0,
        allChecked: true
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options) {

    },

    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady: function () {

    },

    /**
     * 生命周期函数--监听页面显示
     */
    onShow: function () {
        wx.showLoading();
        //加载购物车
        var params = {
            url: "/cart-service/p/shopCart/info",
            method: "POST",
            data: {},
            callBack: res => {
                if (res.length > 0) {
                    // 默认全选
                    var shopCartItem = res[0].shopCartItems;
                    shopCartItem.forEach(shopCartItem => {
                        shopCartItem.checked = true;
                    })

                    this.setData({
                        shopCartItemDiscounts: res,
                        allChecked: true
                    });
                } else {
                    this.setData({
                        shopCartItemDiscounts: [],
                    });
                }
                this.calTotalPrice();//计算总价
                wx.hideLoading();


                // if (res.length > 0) {
                //     // 默认全选
                //     var shopCartItemDiscounts = res[0].shopCartItemDiscounts;
                //     shopCartItemDiscounts.forEach(shopCartItemDiscount => {
                //         shopCartItems.forEach(shopCartItem opCartItemDiscount.sh=> {
                //             shopCartItem.checked = true;
                //         })
                //     })
                //
                //     this.setData({
                //         shopCartItemDiscounts: shopCartItemDiscounts,
                //         allChecked: true
                //     });
                //
                // } else {
                //     this.setData({
                //         shopCartItemDiscounts: [],
                //     });
                // }
                // this.calTotalPrice();//计算总价
                // wx.hideLoading();
            }
        };
        http.request(params);

        http.getCartCount();//重新计算购物车总数量

    },

    /**
     * 去结算
     */
    toFirmOrder: function () {
        var shopCartItemDiscounts = this.data.shopCartItemDiscounts;
        var basketIds = [];
        shopCartItemDiscounts.forEach(shopCartItemDiscount => {
            shopCartItemDiscount.shopCartItems.forEach(shopCartItem => {
                if (shopCartItem.checked) {
                    basketIds.push(shopCartItem.basketId)
                }
            })
        })
        if (!basketIds.length) {
            wx.showToast({
                title: '请选择商品',
                icon: "none"
            })
            return
        }
        wx.setStorageSync("basketIds", JSON.stringify(basketIds));
        wx.navigateTo({
            url: '/pages/submit-order/submit-order?orderEntry=0',
        })
    },

    /**
     * 全选
     */
    onSelAll: function () {
        var allChecked = this.data.allChecked;
        allChecked = !allChecked; //改变状态
        var shopCartItemDiscounts = this.data.shopCartItemDiscounts;

        for (var i = 0; i < shopCartItemDiscounts.length; i++) {
            console.log(shopCartItemDiscounts[i].shopCartItems)
            var cItems = shopCartItemDiscounts[i].shopCartItems;
            for (var j = 0; j < cItems.length; j++) {
                cItems[j].checked = allChecked;
            }
        }

        this.setData({
            allChecked: allChecked,
            shopCartItemDiscounts: shopCartItemDiscounts
        });
        this.calTotalPrice();//计算总价
    },

    /**
     * 每一项的选择事件
     */
    onSelectedItem: function (e) {
        var index = e.currentTarget.dataset.index;// 获取data- 传进来的index
        var scindex = e.currentTarget.dataset.scindex;

        var shopCartItemDiscounts = this.data.shopCartItemDiscounts;// 获取购物车列表
        var checked = shopCartItemDiscounts[scindex].shopCartItems[index].checked; // 获取当前商品的选中状态
        shopCartItemDiscounts[scindex].shopCartItems[index].checked = !checked; // 改变状态
        this.setData({
            shopCartItemDiscounts: shopCartItemDiscounts
        });
        this.checkAllSelected();//检查全选状态
        this.calTotalPrice();//计算总价
    },

    /**
     * 检查全选状态
     */
    checkAllSelected: function () {
        var allChecked = true;
        var shopCartItemDiscounts = this.data.shopCartItemDiscounts;

        var flag = false;
        for (var i = 0; i < shopCartItemDiscounts.length; i++) {
            var cItems = shopCartItemDiscounts[i].shopCartItems;
            for (var j = 0; j < cItems.length; j++) {
                if (!cItems[j].checked) {
                    allChecked = !allChecked;
                    flag = true;
                    break;
                }
            }
            if (flag) {
                break;
            }
        }
        this.setData({
            allChecked: allChecked
        });
    },

    /**
     * 计算购物车总额
     */
    calTotalPrice: function () {
        var shopCartItemDiscounts = this.data.shopCartItemDiscounts;
        var shopCartIds = [];
        for (var i = 0; i < shopCartItemDiscounts.length; i++) {
            var cItems = shopCartItemDiscounts[i].shopCartItems;
            for (var j = 0; j < cItems.length; j++) {
                if (cItems[j].checked) {
                    shopCartIds.push(cItems[j].basketId);
                }
            }
        }

        var ths = this;
        wx.showLoading();
        console.log(shopCartIds);
        var params = {
            url: "/cart-service/p/shopCart/totalPay",
            method: "POST",
            data: shopCartIds,
            callBack: function (res) {
                console.log(res.totalMoney);
                ths.setData({
                    finalMoney: res.finalMoney,
                    totalMoney: res.totalMoney,
                    subtractMoney: res.subtractMoney
                });
                wx.hideLoading();
            }
        };
        http.request(params);

    },

    /**
     * 减少数量
     */
    onCountMinus: function (e) {
        var index = e.currentTarget.dataset.index;
        var scindex = e.currentTarget.dataset.scindex;
        var shopCartItemDiscounts = this.data.shopCartItemDiscounts;
        var prodCount = shopCartItemDiscounts[scindex].shopCartItems[index].basketCount;
        if (prodCount > 1) {
            this.updateCount(shopCartItemDiscounts, scindex, index, -1);
        }
    },

    /**
     * 增加数量
     */
    onCountPlus: function (e) {
        var index = e.currentTarget.dataset.index;
        var scindex = e.currentTarget.dataset.scindex;
        var shopCartItemDiscounts = this.data.shopCartItemDiscounts;
        this.updateCount(shopCartItemDiscounts, scindex, index, 1);
    },


    /**
     * 改变购物车数量接口
     */
    updateCount: function (shopCartItemDiscounts, scindex, index, prodCount) {
        var ths = this;
        wx.showLoading({
            mask: true
        });
        var params = {
            url: "/cart-service/p/shopCart/changeItem",
            method: "POST",
            data: {
                basketCount: prodCount,
                prodId: shopCartItemDiscounts[scindex].shopCartItems[index].prodId,
                skuId: shopCartItemDiscounts[scindex].shopCartItems[index].skuId,
                shopId: 1,
            },
            callBack: function (res) {
                shopCartItemDiscounts[scindex].shopCartItems[index].basketCount += prodCount;
                ths.setData({
                    shopCartItemDiscounts: shopCartItemDiscounts
                });
                ths.calTotalPrice();//计算总价
                wx.hideLoading();

                http.getCartCount();//重新计算购物车总数量
            }
        };
        http.request(params);
    },

    /**
     * 删除购物车商品
     */
    onDelBasket: function () {
        var ths = this;

        var shopCartItemDiscounts = this.data.shopCartItemDiscounts;
        var basketIds = [];
        for (var i = 0; i < shopCartItemDiscounts.length; i++) {
            var cItems = shopCartItemDiscounts[i].shopCartItems;
            for (var j = 0; j < cItems.length; j++) {
                if (cItems[j].checked) {
                    basketIds.push(cItems[j].basketId);
                }
            }
        }

        if (basketIds.length == 0) {
            wx.showToast({
                title: '请选择商品',
                icon: "none"
            })
        } else {
            wx.showModal({
                title: '',
                content: '确认要删除选中的商品吗？',
                confirmColor: "#eb2444",
                success(res) {
                    if (res.confirm) {

                        wx.showLoading({
                            mask: true
                        });
                        var params = {
                            url: "/cart-service/p/shopCart/deleteItem",
                            method: "DELETE",
                            data: basketIds,
                            callBack: function (res) {
                                wx.hideLoading();
                                ths.onShow();
                            }
                        };
                        http.request(params);
                    }
                }
            })
        }


    }


})
